Rotary cooling apparatus.



No. 677,870. Patenked July 9, I90l. J. W. KITTRELL.

ROTARY COOLING APPARATUS.

(Application filed Aug. 6, 1900.; (No Model.) 2 Shaeis-Sheet 2.

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UNITED STATES PATENT OFFICE.

JAMES IV. KITTRELL, OF SMITHS LANDING, NEW YORK.

ROTARY COOLING APPARATUS.

SPECIFICATION forming part of Letters Patent N 0. 677,870, dated July 9,1901,

Application filed August 6, 1900. Serial-No. 26,054. (No model.)

To all whom it may concern:

Be it known that I, JAMES W. KITTRELL, a citizen of the UnitedStates,'residi n g at Smiths Landing, in the county of Greene and Stateof New York, have invented certain new and useful Improvements in RotaryCooling Apparatus, of which the following is a specification.

My invention has for its object to rapidly cool the granular matterdischarged from certain classes of furnaces or heaters--as, forinstance, furnaces for heating cement or for heating phosphate rock,860.; and my invention consists in the combinatiomwith thefurnace orheater, of a rotary shell provided near its wall with pipes forreceiving a cooling liquid, which rapidly cools the material dischargedto and conducted through the shell,

\ and which liquid is heated thereby for subsequent use for feed-waterfor boilers, &c.', and in the particular construction of thecooling-shell, as fully set forth hereinafter and as illustrated in theaccompanying drawings, in which- Figure 1 is a side view, partly inelevation and partly in section, of my improved cooling-shell shown asarranged in respect to a furnace. Fig. 2 is a transverse section of theshell, and Fig. 3 is a sectional view illustrating a modification.

The furnace A may be any suitable furnace or heater-as, for instance, afurnace for drying phosphates or one in which cement is heated. In anycase it is a furnace from which hot material must be discharged in amore or less granular condition, and therefore has a discharge-openingag'and from the latter may extend a chute B.

The material which is discharged from the furnace is cooled andconducted from the furnace, and the heat of the cooled material isutilized by means of a rotary shell 0, preferably supported upon rolls DD in a slightlyinclined position, so that the material discharged fromthe chute B at the inlet end will pass gradually by gravity, as theshell rotates, toward the outlet end. The shell is rotated by power inany suitable manner.

Within the shell,adjacent to'the wall there-v of, are channels for thecirculation or discharge of liquid or fluidas, for instance,

' water-and, as shown in Figs. 1 and 2, the said channels consist ofpipes 0, arranged parallel to each other adjacent to the inner wall, andthese pipes are so connected at their ends as to constitute practicallyone continuous pipe, the Water flowing thereto through a radial pipe 0at the inlet end and connected with the first of the series of pipes cand being discharged through a radial pipe 0, connected with the last ofthe series of pipes c at the outlet end of the shell. The inlet pipe 0communicates with a hollow casing F, having a stuffing-box, into whichextends the branch n of the supply-pipe It, so that the casing F canrotate with the shell about the branch n, the packing preventing anyleakage, and to properly brace the parts an inclined bracep extends from.the casing F to one of the pipes 0. At the discharge end of the shellthere is a similar casing F, communicating -with the pipe 0 and with abranch of the stationary discharge-pipe 7c. As thus constructed thematerial discharged fromthe furnace passes into the inlet end of theshell and the latter is rotated, thereby bringing the material intocontact with all of the conducting-pipes, so that the Water passingtherethrough tends to gradually abstract the heat from thematerial,while the water itself is heated and in its heated state maybeused as feed-water for boilers or for other purposes.

In order to properly support the pipes c, the interior of the shell isprovided with bearing-rings g, which may be held in place in anysuitable manner. If desirable, these ringsmight be provided with groovesor sockets to receive the pipes 0.

Where the material to be cooled is abrasive in its character-as, forinstance, the rock used in preparing cementit is apt to wear away thepipes c with great rapidity if it moves abrasively in contact with thesame. I have found that this rapid wear may be prevented by means ofprotective or guard strips arranged longitudinally of the shell, but soplaced that the material will not be brought percussively against pipesc or roll over the same in the rotation of the shell. These strips ff,as shown, are arranged each between two pipes c c and extend somewhatover the latter, as shown in Fig. 2, and as thus arranged may also bethe means of clamping the pipes in place by means of bolts 3, passingthrough the strips and through the shell, as shown. The strips may,however, be secured in any other suitable manner.

While I have shown in Figs. 1 and 2 an arrangement whereby the Waterflows successively through all of the pipes a before being discharged,this is not necessary, as the water may be conducted from the pipe to ahollow ring a at the entrance end of the shell, the said ringcommunicating with all of the pipes c, as in Fig. 3, and the latter atthe discharge end communicating with another ring 1;, from which thepipe 0 leads. In such case the water will flow in parallel coursesthrough all of the pipes c in the same direction, and a more rapidcooling effect will be secured.

While I have shown one construction of rotary shell provided withchannels for a cooling liquid combined with the discharge-opening of afurnace or heater, I do not limit myself to such construction, as arotary shell provided with channels for a cooling liquid may bedifferently constructed to secure the desired result.

\Vithout limiting myself to the precise construction and arrangement ofparts shown, I claim- 1. In a rotary cooling apparatus, the combinationof arotary shell, means to deliver the material to be cooled thereto,said shell being provided with channels arranged within it adjacent toits walls and movable with the shell when the latter is rotated,protective strips for said channels extending longitudinally of theshell and means for supplying a cooling fluid to and discharging it fromsaid channels, substantially as set forth.

2. The combination with the rotating shell, of a series of pipesconstituting conductingchannels arranged within the shell adjacent tothe walls thereof and movable with the shell during its rotation, andprotective strips arranged longitudinally of said shell, substantiallyas set forth. 7

3. The combination with the rotating shell, of a series of pipesconstituting conductingchannels arranged within the shell adjacent tothe walls thereof, protective strips arranged longitudinally of saidshell, and bolts connecting said strips to the shell, substantially asset forth.

4. The combination with the rotating shell, of a series of pipesconstituting conductingchannels arranged within the shell adjacent tothe walls thereof, bearing-rings on the walls to support the pipes, andprotective strips arranged longitudinally of said shell, substantiallyas set forth.

5. The combination with the rotating shell, of a series of pipesconstituting.conductingchannels arranged within the shell adjacent tothe Walls thereof, bearing-rin gs on the walls to support the pipes,protective strips arranged longitudinally of said shell, and boltsconnecting said strips to the shell, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JAMES W. KIT'IRELL.

Witnesses:

GEORGE A. STURGES, Jr.,-

EDGAR JOHNSTON.

